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Power Systems

Power Systems
A loss less transmission line has a length of 600 km, find the phase shift of voltage signal?

 42°
 36°
 45°
 90°

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Power Systems
Which of the following is/are advantages of N-R method?

 Number of iterations are less
 Time taken for each iteration is less
 Applicable for large power system network
 both 1 and 2

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Power Systems
In nuclear power plants which material is/are used as coolant?

All of these
 graphite
 liquid sodium
 beryllium

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Power Systems
In a short circuit test circuit breaker, time to reach the peak re-striking voltage 60 microsecond & the peak re-striking voltage 120 kV. Determine average RRRV (Rate of rise re-striking voltage)?

  3 × 106 kV / sec.
  2 × 106 kV / sec.
 3.5 × 106 kV / sec.
 1 × 106 kV / sec.

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Power Systems
Which of following materials can be used as coolant

 Heavy water.
 CO2.
  Any of above.
 Helium.

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Power Systems
Cheapest plant in operation and maintenance is

  hydroelectric.
  steam power.
  diesel power.
  nuclear.

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